SUPERCRITICAL CARBON DIOXIDE PRINTING AND DYEING PROCESS AND PRINTING AND DYEING SYSTEM THEREOF

摘要

The invention discloses a supercritical carbon dioxide printing and dyeing process and system. The process comprises: Step (1), transforming liquid carbon dioxide into supercritical carbon dioxide; Step (2), mixing the supercritical carbon dioxide with a dye to form a dye solution; Step (3), transferring the dye solution into a dyeing kettle, and dyeing a spindle from a spindle inlet under the function of ultrasonic wave and bidirectional circulation; and Step (4), collecting a residual dye solution and performing a decompression and separation treatment, and respectively purifying, drying and recycling the separated dye and the separated supercritical carbon dioxide. The aforementioned printing and dyeing process and system do not produce dyeing wastewater and other wastes, and it can be green and clean with high economic benefit and remarkable environmental benefit, which can also achieve the purpose of recycling, continuous production, high output and low cost.